Abstract: A battery including: a plurality of battery cells arranged side-by-side, each battery cell including a terminal tab for delivering power from the cell; a bus plate made of an electrically non-conductive material, the bus plate also having an array of holes formed therein, the array of holes defining a plurality of hole pairs, wherein the terminal tab from each cell of the plurality of cells extends through a corresponding different hole in the array of holes, wherein for each hole pair of the plurality of hole pairs, the terminal tabs extending through that hole pair are folded one over the other to produce overlapping tabs for that hole pair; and a plurality of clamps each of which clamps together the overlapping tabs of a corresponding different hole pair.

Abstract: A battery module is provided. The battery module includes a battery body having a plurality of unit cells arranged in series and having a respective barrier disposed between adjacent unit cells. End plates are disposed on opposite outermost sides of the battery body. A fixing unit fixes together the end plates and the battery body by enclosing an outer circumference of an assembly of the end plates and the battery body.

Abstract: The present invention provides a battery including a case, a connector, the holding member, and a resilient conductive plate. In the case, two battery cells each in the form of a flattened rectangular plate are accommodated. The connector is exposed from the case. The holding member is for holding the two battery cells in the case. The holding member is made of a nonconductive resilient material and has a first battery accommodating section and a second battery accommodating section in which the battery cells each in the form of a flattened rectangular plate are accommodated in a juxtaposed relationship so as to form a rectangular shape as viewed in plan. The resilient conductive plate extends on the holding member for electrically connecting the two battery cells accommodated in the first and second battery accommodating sections and the connector to each other.

Abstract: A rechargeable battery according to embodiments of the present invention has improved safety against puncture and collapse. The secondary battery includes an electrode assembly, a case, a first electrode terminal and a second electrode terminal, a cap plate, and a short circuit member. The electrode assembly includes a first electrode, a separator, and a second electrode. The case contains the electrode assembly. The first electrode terminal and a second electrode terminal are electrically connected to the first electrode and the second electrode of the electrode assembly, respectively. The short circuit member extends from the end of one of the first electrode and the second electrode and is wound around the outermost periphery of the electrode assembly to short circuit the electrode assembly when the secondary battery is punctured or collapsed.

Abstract: An electric storage module includes: a plurality of electric storage units; a casing that houses the plurality of electric storage units, and includes a pair of resin side plates that hold and support at least the plurality of electric storage units from opposite sides; a plurality of conductive members for electrically connecting the plurality of electric storage units; a metal cover member that covers the casing on an outside of each of the side plates; and a peripheral wall protruding from each of the side plates so as to surround each of the plurality of conductive members, wherein: a height of the peripheral wall from each of the side plates is higher than a height of the conductive members from each of the side plates, and smaller than a distance from each of the side plates to the cover member.

Abstract: An electric power storage cell including several electrochemical elements connected in series and/or in parallel, arranged inside a sealed casing. The casing electrically connects the electrochemical elements to a power connecting device outside the casing. The electrical connection is configured so that the casing can be traversed without affecting adversely the tightness thereof and without transmitting stresses to the casing. The storage cell has applications in the field of lithium polymer technologies with high power storage assemblies.

Abstract: A connection apparatus of a battery cell module having a battery cell cover with connecting plates formed at opposing ends thereof, a main frame having guide channels that receive the cell cover, and a top cover to secured the cell cover to the main frame, the connection apparatus having holes at opposing sides of a bottom of the main frame, connecting units configured for insertion into the holes and for contacting the connecting plates, and a conductive bridge electrically connecting the connecting units is disclosed.

Abstract: An accumulator comprises at least one galvanic cell and a receiving device for supporting the galvanic cell(s) of the accumulator. The receiving device comprises at least one protecting wall for receiving energy by means of elastic and/or plastic deformation. The protecting wall encases the at least one galvanic cell at least partially and has a thickness which is at least partially less than about 1/10 of the characteristic edge length of the at least one galvanic cell.

Abstract: A battery module includes a top cover and a bottom cover affixed together to accommodate a battery set, which has a conducting terminal device exposed out of the bottom cover for the connection of an external electronic device, and a movable member supported on the top surface of the bottom cover and held in a first position by spring members to block the through holes of the bottom cover and movable from the first position to a second position to open the through holes of the bottom cover for ventilation to dissipate heat when the battery module is connected to an external electronic device.

Abstract: An electronic apparatus includes: an electronic component; a battery pack configured to supply power to the electronic component; and a battery holder configured to receive the battery pack, wherein a first face of the battery holder opposing to a second face of an outside wall of the battery pack is formed to comprise a beam, and wherein the second face of the battery pack is formed to include a slit that is fitted with the beam.

Abstract: A battery module includes a case with at least one face which is opened, a plurality of partition walls fixedly installed at predetermined intervals in the case, and a plurality of unit batteries which are separated from each other with the partition walls therebetween to be inserted into the case. The battery module may include a battery fixing structure which is installed between the case and the unit batteries to fix the unit batteries so as to prevent positional movement of the unit batteries in the case. The battery fixing structure may be a concavo-convex engaging structure including fixing projections and projection receiving portions.

Abstract: The invention relates to a battery including a plurality of juxtaposed cylindrical or prismatic cells located in the through holes of a separating and positioning crate, characterised in that the separating and positioning crate is provided between two contact and holding plates having inner surfaces provided with one or more contact strips attached without welding against said faces and ensuring the electric interconnection between a plurality of cells. Said contact strip or each of said contact strips is made of a flexible conducting material having a plurality of flexible contact tabs cut in said contact strip(s) and maintained against the terminals of the cells by individual elastic pressure means secured by screwing onto the separating and positioning crate so that said contact tabs are individually pressed against one of the terminals or poles of said cells.

Abstract: A large-capacity battery module which is formed by integrating a plurality of unit cells. The present invention provides a secondary battery module having a plurality of unit cells and connectors for electrically connecting the unit cells, which includes: a spacer set up between the unit cells and the connectors. The secondary battery module can insulate a cap from a connector and maintain a uniform space between the unit cells.

Abstract: A battery connector includes a housing having a bottom wall, two sides of the bottom wall extend upward to form two sidewalls, and the back end of the bottom wall extends upward to form a back wall. At least one partition wall is set between the two sidewalls and connects with the bottom wall and the back wall. A plurality of terminal recesses are defined in the housing and separated by the partition wall for receiving a plurality of electric terminals. Each electric terminal has a soldering portion extending forward to connect with a printed circuit board and a contacting portion protruding upward out of the housing for contacting a battery. Between the housing and the printed circuit board a stopping element is set. The stopping element can stop the contacting portion moving forward to contact the printed circuit board or lose resilience if improper installation of the battery occurs.

Abstract: In an assembled battery (2), batteries (3) are arranged in such a manner that sealing plates (13) for sealing openings of battery cases (10) face the same direction. Terminal (10) of first electrodes of the batteries (3) are connected to a first electrode connecting pieces (33) arranged near the sealing plates (13), and terminal (13) of second electrodes of the batteries (3) are connected to a second electrode connecting pieces (27) arranged near the sealing plates (13). The first electrode connecting pieces (33) are connected in parallel with each other, and the second electrode connecting pieces (27) are connected in parallel with each other. The first electrode connecting pieces (33) and the second electrode connecting pieces (27) are stacked on the sealing plates (13) with an insulating member (32) interposed therebetween.

Abstract: In a battery module including a plurality of batteries 40 stored in a housing, each of the batteries 40 includes an electrode portion 16 protruding from a battery case 5, a base 30A is arranged on a side of the electrode portions 16 so that the base 30A is in contact with the battery cases 5, and the electrode portions 16 are inserted in through holes 36 provided in the base 30A. Connection portions 320 connected to the electrode portions 16 are formed on upper surfaces of the electrode portions 16. A connection terminal 32 for connecting the batteries 40 in parallel is formed in a region on the base 30A in which the connection terminal 32 does not cover the through holes 36. The connection terminal 32 is connected to the connection portions 320 by fusible links 320A straddling the through holes 36.

Abstract: In the production of a secondary electrochemical generator comprising a container with a casing (3) and a cover (4), the stage of electric coupling of a connection to a current output is designed so that the length of the connection does not allow it to come into contact with the current output when the cover is not in its closed position. This stage comprises the following steps: a first end (22) of the connection is electrically connected to an electrode (2), the cover is placed on the casing in order to close the container so that the second end (23) of the connection is in physical contact with the current output which is electrically insulated from the casing, and an electric current is applied between the casing and the current output so as to weld the second end of the connection to the current output.

Abstract: The power source apparatus is provided with batteries having positive and negative electrode regions, parallel blocks with batteries stacked together and electrically connected in parallel, multiple parallel-series connected blocks with the parallel blocks electrically connected in series, and bus-bars having a plurality of insertion holes to insert the positive and negative electrode regions and electrically connect the batteries. Batteries in a parallel block are stacked together lining-up positive electrode regions on one side and negative electrode regions on the other side. Parallel blocks in a multiple parallel-series connected block are stacked reversing the orientation of each block added to the stack. The bus-bars are integrated pieces that can electrically connect the batteries in a parallel block in parallel as well as electrically connect the parallel blocks in series.

Abstract: A bus bar assembly includes a flexible member comprising a plurality of apertures provided therein. The bus bar assembly also includes a plurality of electrically conductive members coupled to the flexible member. Each of the plurality of conductive members includes an aperture that is aligned with one of the apertures of the flexible member such that the bus bar assembly is configured for electrically coupling a plurality of electrochemical cells together when at least one terminal of each of the cells is received within an aperture of the flexible member and an associated aperture of one of the plurality of conductive members.

Abstract: The present disclosure relates to a battery for use in various applications including starting, lighting, and ignition and other purposes in vehicles such as automobiles and boats. The disclosed battery design includes a number of battery cell elements connected in series by a number of straps. The present disclosure describes a system of connecting the cells that minimizes the size and weight of the straps and increases the operating efficiency of the battery.

Abstract: A holding member attached to outer peripheries of a plurality of adjacent cylindrical cell modules which are arranged parallel along axes thereof. Each cell module is formed by a plurality of unit cells serially connected, and the holding member is positioned in the middle of the cell modules along the axes thereof so that a gap is secured between the cell modules. The holding member has a plurality of circular holding portions for respectively holding the cell modules, wherein the holding portions are coupled with each other, and the coupled holding portions have a plurality of divided portions at which the coupled holding portions are divided into two holding bodies, each being fit over the cell modules; and a coupling device for coupling the divided portions positioned between adjacent two of the holding portions.

Abstract: Disclosed herein is a middle- or large-sized battery module comprising: a battery cell stack including a plurality of battery cells or unit modules electrically connected with each other; a first module case constructed in a structure to entirely surround one side end of the battery cell stack and to partially surround the upper and lower ends of the battery cell stack; a second module case coupled with the first module case, the second module case being constructed in a structure to entirely surround the other side end of the battery cell stack and to partially surround the upper and lower ends of the battery cell stack; a sensing member mounted to the first module case or the second module case; and a battery management system (BMS) mounted to the first module case or the second module case.

Abstract: Disclosed herein is a battery module including a plurality of unit cells stacked one on another. The battery module has a cooling system that accomplishes contact type cooling by a coolant flowing through gaps (flow channels) defined between the unit cells, and the flow channels defined between the unit cells are at a predetermined angle to the flowing direction of the coolant at inlet ports of the flow channels. The contact rate of the coolant to the unit cells in the battery module is increased and a large number of turbulent flows are created by the changing the flow channel through which the coolant flows. Consequently, the occurrence of the velocity gradient of the coolant in the flow channel defined between the unit cells is prevented, and therefore, the cooling efficiency of the battery module is improved.

Abstract: Disclosed herein is a battery pack including: a plurality of cylindrical battery cells arranged in a plurality of rows and a plurality of layers; and a partition member for partitioning the battery cells; wherein each the battery cell is larger in diametral size on the positive electrode terminal side than on the negative electrode terminal side; the partition member includes a partition plate, and ribs formed in corners formed between the partition plate and support plates provided to be substantially orthogonal to the partition plate at substantially regular intervals, the ribs being operative to support the battery cells; and the ribs are formed correspondingly to the shape of the battery cell.

Abstract: A battery pack including a hollow hexahedral casing includes a first panel having first supporting holes; and a second panel having second supporting holes formed at locations corresponding to locations of the first supporting holes; and includes a plurality of secondary batteries. First ends of the secondary batteries are supported by the first supporting holes and second ends of the secondary batteries are supported by the second supporting holes.

Abstract: A rechargeable battery is constructed with a plurality of electrode assemblies disposed at a distance from each other, a first current collecting plate disposed at one side of the plurality of electrode assemblies, a second current collecting plate disposed at an opposite side of the plurality of the electrode assemblies, the first and second current collecting plates being electrically connected with the electrode assemblies, a case housing the electrode assemblies, the first current collecting plate, and the second current collecting plate, and an electrode terminal provided in the case, and electrically connected with at least one of the first and second current collecting plates.

Abstract: Provided are battery packs capable of preventing electrical shorts due to incorrect arrangement of polarities of the battery packs during assembly of an uninterruptible power supply (UPS) having the battery packs and a UPS having the battery packs. The battery pack includes: a casing housing a plurality of cells; first and second terminals arranged to protrude outwardly from a first surface of the casing and having opposite polarities; a first attachment unit formed on a second surface of the casing; and a second attachment unit formed on a third surface of the casing, disposed opposite the second surface of the casing, wherein the first attachment unit and the second attachment unit are not symmetrical to each other.

Abstract: A battery pack includes battery cells, each including a first conductive terminal and a second conductive terminal, the battery cells being arrayed from a first side to a second side of the battery pack. A first conductive tab electrically connects the first conductive terminals of the battery cells to each other, a second conductive tab electrically connects the second conductive terminals of the battery cells to each other, a first conductive external terminal is electrically connected to a side of the first conductive tab and is configured to be electrically connected to an external device, and a second conductive external terminal is electrically connected to a side of the second conductive tab and is configured to be electrically connected to the external device. A battery pack stack includes battery packs, each including a first conductive external terminal and a second conductive external terminal, the battery packs being arrayed from a first end to a second end of the stack.

Abstract: A battery pack including a core pack having a number of battery cells; a waterproof and heat-dissipating case formed of a flexible material that surrounds the core pack; and wiring that is electrically connected to the core pack and is drawn out of the waterproof and heat-dissipating case. A waterproof structure that prevents water penetration is formed in a portion of the waterproof and heat-dissipating case from where the wiring is drawn. Accordingly, water from the outside is effectively prevented from entering the battery pack and heat of the battery cells may be effectively dissipated out of the battery pack.

Abstract: Disclosed herein is a battery cartridge for middle- or large-sized battery packs, which has one or more unit cells mounted therein. The battery cartridge is generally constructed in a plate-shaped structure for easy stacking, and connecting members for electrical connection between cartridges are constructed in a coupling structure in which the connecting members are coupled with each other during the stacking of the cartridges. When a plurality of cartridges are stacked one on another so as to construct a middle- or large-sized battery pack, the mechanical coupling between the cartridges is accomplished, and, at the same time, the electrical connection between the cartridges is also accomplished, whereby the assembly of the cartridges is easily accomplished, and the risk of short circuits is prevented during the assembly or the use of the cartridges. Furthermore, a middle- or large-sized battery pack manufactured using the battery cartridge according to the present invention has a stable compact structure.

Abstract: A method for conducting an operation including a power tool battery pack. The battery pack can include a housing, a first cell supported by the housing and having a voltage, and a second cell supported by the housing and having a voltage. The battery pack also can be connectable to a power tool and be operable to supply power to operate the power tool. The method can include discharging one of the first cell and the second cell until the voltage of the one of the first cell and the second cell is substantially equal to the voltage of the other of the first cell and the second cell.

Abstract: A battery pack includes a plurality of battery units, each comprising a plurality of battery cells, a case providing a space to accommodate the battery cells, and a plurality of electrode terminals that are electrically connected to the battery cells and protrude out of the case. Bus bars connect electrode terminals of adjacent battery units. Short circuits are prevented by surrounding each bus bar with an insulating protection unit.

Abstract: A rechargeable battery is disclosed. In one embodiment, the battery includes i) a current collecting plate, ii) a plurality of electrode assemblies electrically connected in parallel with each other via the current collecting plate, wherein each of the electrode assemblies comprises two opposing ends and an outer side formed between the two ends, and wherein the current collecting plate is electrically connected to one of the two ends of the electrode assemblies. The battery may further includes 1) a spacer and 2) a can configured to accommodate i) the current collecting plate, ii) the plurality of electrode assemblies and iii) the spacer, wherein the spacer is positioned i) between adjacent electrode assemblies and/or ii) between an inner surface of the can and at least one of the electrode assemblies, and wherein the spacer comprises at least one non-linear portion which contacts the outer side of at least one of the electrode assemblies.

Abstract: A large-capacity battery module which is formed by integrating a plurality of unit cells. The present invention provides a secondary battery module having a plurality of unit cells and connectors for electrically connecting the unit cells, which includes: a spacer set up between the unit cells and the connectors. The secondary battery module can insulate a cap from a connector and maintain a uniform space between the unit cells.

Abstract: A battery pack having lead wires connected to a plurality of unit batteries which are distributed to prevent malfunction of the batteries due to contact between the unit batteries and the lead wires. The lead wires are distributed within the minimum distances to facilitate a wire distributing process and reduce manufacturing costs. The battery pack includes unit batteries, a spacer disposed between the unit batteries, a protective circuit module connected to the unit batteries through lead wires, and a holder surrounding the unit batteries and having paths through with the lead wires pass, respectively.

Abstract: A tunable frangible battery pack system for use in an electric vehicle is disclosed. The tunable frangible battery pack system includes a two piece clamshell housing. The system also includes a plurality of battery cells arranged within the housing and a collector plate secured to each piece of the housing. The system also includes a wire conductor arranged between each of the battery cells and collector plates to create a frangible disconnect system when the battery pack system and electric vehicle are exposed to a predetermined mechanical or thermal force or event.

Abstract: A cell includes an electrode plate group which is formed by laminating a positive electrode plate and a negative electrode plate with a separator interposed between them, and includes leads protruding toward directions opposite to each other from one side of the positive electrode plate and the negative electrode plate. Collectors are joined to the leads on both sides of the electrode plate group, and include connection protrusions formed so as to protrude outside. A bag-shape battery case containing the electrode plate group is joined to the collectors such that only the connection protrusions of the collectors are protruded outside the bag-shaped battery case. A battery module is constituted by placing a plurality of the cells, connected together, into a prismatic battery case.

Abstract: A battery pack of a battery includes a plurality of laminated cells that are hermetically sealed by a laminated film, a case for storing the plurality of the laminated cells, a positive electrode terminal and a negative electrode terminal of a battery for connecting the cells in parallel or series for connection to the outside of the case, a lid member for pressing the cells from the uppermost surface of the laminate of the cells stored in the case toward the inner side of the case in the direction opposite to the laminating direction of the cells, and a fixing member for fixing the lid member to the case at a position where a predetermined pressing force is applied.

Abstract: A battery pack is provided, which can be assembled easily and has a high reliability. In a case of the battery pack 1 constituted by an upper case 3 and a lower case 4, a plurality of box-shaped cells 5 and a partition member 2 are housed. The partition member 2 supports the cells in stacked manner as being spaced from each other, and has an insulating member for insulating between a cell 5b and a cell 5c, which are electrically connected in parallel. The partition member is further provided with the cells 5, a positive electrode 6, a negative electrode 7, an intermediate tub 8, and a guide for aligning the upper case 3 and the lower case 4.

Abstract: The present invention describes a monoblock for a plurality of lithium ion cells. The monoblock includes a case having a base and a cover dimensioned and configured to the base. The case includes a chamber that includes cell compartments for lithium cells. Each lithium cell is disposed in a leaf spring that applies compression pressure on the cell. The structural integrity of the battery and cells is maintained using internal and external anti-swelling features including a waffle pattern, backing plates, etc. A liquid and gas pressure management system is also incorporated with the case and realized by a vent plenum, check valves, bladders, bags, etc.

Abstract: According to one embodiment, a non-aqueous electrolyte battery includes an outer case, a positive electrode housed in the outer case and containing a positive electrode active material, a negative electrode housed in the outer case and containing a monoclinic crystal ?-type titanium composite oxide, and a non-aqueous electrolyte filled in the outer case. An absolute value of a gradient of a potential of the negative electrode is larger than that of the positive electrode. Wherein, each of the gradients of a potential of the negative and positive electrodes is found from variations in potential which come at the state of full charge on an open-circuit potential curve drawn from potentials of the positive electrode and the negative electrode.

Abstract: The invention is based on an energy storage module, in particular a battery pack for supplying power to a power tool. According to the invention, a plurality of cells are interconnected electrically for energy storage. It is proposed that the cells are electrochemical storage cells having a flexible cell casing that is dimensionally unstable. The invention further relates to a power tool having at least one such energy storage module.

Abstract: Disclosed herein is a middle- or large-sized battery module comprising: a battery cell stack including a plurality of battery cells or unit modules electrically connected with each other, a first module case constructed in a structure to entirely surround one side end of the battery cell stack and to partially surround the upper and lower ends of the battery cell stack, a second module case coupled with the first module case, the second module case being constructed in a structure to entirely surround the other side end of the battery cell stack and to partially surround the upper and lower ends of the battery cell stack, a sensing member mounted to the first module case or the second module case, and a battery management system (BMS) mounted to the first module case or the second module case.

Abstract: A battery module including a plurality of rechargeable batteries including a case and terminals protruding outside of the case; a first connecting member electrically connecting first terminals of neighboring rechargeable batteries and including a fuse unit configured to disconnect the first terminals of the neighboring rechargeable batteries when an overcurrent is generated; a plurality of second connecting members electrically connecting second terminals of the neighboring rechargeable batteries to terminals of connected rechargeable batteries; and a shorting member configured to generate a short circuit by connecting neighboring second connecting members to each other.

Abstract: A battery module having battery cell assemblies with alignment-coupling features is provided. The battery module includes a first battery cell assembly having at least first, second, third and fourth alignment-coupling features thereon. The battery module further includes a second battery cell assembly having at least fifth, sixth, seventh, and eighth alignment-coupling features thereon. The fifth, sixth, seventh, and eighth alignment-coupling features of the second battery cell assembly are configured to engage the first, second, third and fourth alignment-coupling features, respectively, of the first battery cell assembly to couple the second battery cell assembly to the first battery cell assembly and to align the second battery cell assembly relative to the first battery cell assembly.

Abstract: A battery cartridge includes a pair of outer frame members for receiving unit cells and an inner frame member disposed between the outer frame members. The unit cells are mounted between the outer and inner frame members. The inner frame member has a plurality of through-holes, which communicate with the outside while the unit cells are mounted between the outer and inner frame members. An opened type battery module includes such a battery cartridge. The battery cartridge and the battery module have a high structural integration and mechanical strength. Consequently, the present invention has the effect of minimizing the size of a battery system, stably mounting unit cells having low mechanical strength, and effectively removing heat from the unit cells.

Abstract: Disclosed herein are a stacking type electrode assembly constructed in a cathode/separator/anode structure, wherein the electrode assembly is provided at a predetermined region thereof with at least one through-hole, and a pair of holding members (a male coupling member and a female coupling member) constructed in a male-female coupling type structure is inserted through the through-hole inside a battery case, an outer surface of the female coupling member being brought into tight contact with the through-hole when the male coupling member is inserted into the female coupling member while the female coupling member having an outer diameter less than an inner diameter of the through-hole is inserted through the through-hole, and a secondary battery including the same.

Abstract: The present invention relates to a battery module, related devices and methods. More particularly, the present invention relates to a battery module with an improved mechanism of electrically connecting modules to form one or more battery packs and devices and methods that relate to the improved mechanism. In one aspect, the present invention provides a battery module. The module comprises: a top cover that connects to a bottom housing to form a casing; a positive terminal connected to a proximal end of the casing, wherein the end of the positive material is shaped such that it can insert into a sleeve; a negative electrode connected to a distal end of the casing, wherein the negative electrode is housed within the sleeve such that an electrical contact is made when a positive terminal is inserted into the sleeve; and, at least one electrochemical cell connected to the inside surface of the bottom housing.

Abstract: The present invention provides battery cell having low resistance internal connections and compact, low volume terminal connections in order to maximize power-producing volume. The battery of the present invention may be created using a novel fold geometry to fold electrode tabs into compact, low profile tabs having a low total volume. The battery cell provides a means for equalizing path lengths from each electrode active area to the point of connection to the terminal and also reducing path length, thereby further reducing resistance of the battery. The connection means of the present invention consumes less internal battery space than connection means of prior art electrode stacks. Accordingly, the electrode stack of the present invention disposes more or larger battery cells in the battery than the prior art and thus provides more power than the prior art battery. The present invention is designed to overcome prior art difficulties in preparing a battery.

Abstract: A rechargeable battery, which features a simplified assembly process by reducing the number of components includes a bare cell, a body portion which is attached to one side surface of the bare cell and a protective circuit board portion which has two electrical terminals respectively electrically connected to two electrode terminals of the bare cell and formed into one single body by molding. A method of fabrication of the rechargeable battery includes forming a protective circuit board portion into one single body through resin molding, attaching the protective circuit board portion to a bare cell, and respectively electrically connecting two electrical terminals of the protective circuit board portion to two electrodes of the bare cell.